<template>
    <el-container class="home-container">
        <!--        头部区域-->
        <el-header>
            <div>
                <img src="../assets/logo2.png" alt="">
                <span>电商后台管理系统</span>
            </div>
            <el-button type="info" @click="logout">退出</el-button>
        </el-header>
        <!--页面主体区域-->
        <el-container>
            <!-- 侧边栏-->
            <el-aside :width="isCollapse ? '64px' : '200px'">
                <div class="toggle-button" @click="toggleCollapse">|||</div>
                <!--侧边栏菜单区域-->
                <el-menu background-color="#333744" text-color="#fff" active-text-color="#409eff" unique-opened :collapse="isCollapse" :collapse-transition="false" router default-active="/users">
                    <!-- 一级菜单   :index相当于:to，进行路由跳转的url-->
                    <el-submenu :index="item.id + '' " v-for="item in menulist" :key="item.id">
                        <!-- 一级菜单的模板区域-->
                        <template slot="title">
                            <!--图标-->
                            <i :class="iconsObj[item.id]"></i>
                            <!-- 文本-->
                            <span>{{item.authName}}</span>
                        </template>

                        <!-- 二级菜单-->
                        <el-menu-item :index=" '/' + subItem.path" v-for="subItem in item.children" :key="subItem.id">
                            <template slot="title" @click="saveNavState">
                                <!-- 图标-->
                                <i class="el-icon-menu"></i>
                                <!--  文本-->
                                <span>{{subItem.authName}}</span>
                            </template>
                        </el-menu-item>
                    </el-submenu>
                </el-menu>
            </el-aside>
            <!--            右侧区域-->
            <el-main>
                <router-view></router-view>
            </el-main>
        </el-container>
    </el-container>
</template>

<script>
    export default {
        data(){
            return{
                // 左侧菜单数据
                menulist:[],
                iconsObj:{
                    '125':'iconfont icon-user',
                    '103':'iconfont icon-tijikongjian',
                    '101':'iconfont icon-shangpin',
                    '102':'iconfont icon-danju',
                    '145':'iconfont icon-baobiao'
                },
                isCollapse:false,
                activePath:''
            }
        },
        created() {
            this.getMenuList()
            this.activePath = window.sessionStorage.getItem('activePath')
        },
        name: "Home",
        methods: {
            logout() {
                window.sessionStorage.clear();
                this.$router.push('/login');
            },
            //获取所有菜单
            async getMenuList(){
                const {data: res} =await this.$http.get('menus');
                if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
                this.menulist = res.data;
            },
            // 点击按钮切换菜单的折叠展开
            toggleCollapse(){
                this.isCollapse = !this.isCollapse
            },
            // 保存链接的激活状态
            saveNavState(activePath){
                window.sessionStorage.setItem('activePath',activePath);
                this.activePath = activePath
            }

        }
    }
</script>

<style lang="less" scoped>
    .home-container {
        height: 100%;
    }

    .el-header {
        background-color: #373d41;
        display: flex;
        justify-content: space-between;
        padding-left: 0;
        align-items: center;
        color: #fff;
        font-size: 20px;

        > div {
            display: flex;
            align-items: center;

            img{
                width: 55px;
                height: 50px;
                border-radius: 50%;
                margin-left: 10px;
            }
            span {
                margin-left: 15px;
            }
        }
    }

    .el-aside {
        background-color: #333744;
        .el-menu{
            border-right: none;
        }
    }

    .el-main {
        background-color: #eaedf1;
    }

    .iconfont{
        margin-right: 10px;
    }

    .toggle-button{
        background-color: #4a5064;
        font-size: 10px;
        line-height: 24px;
        color: #fff;
        text-align: center;
        letter-spacing: 0.2em;
        cursor: pointer;
    }

</style>